Diem Ngoc Nguyen, MD
Pediatrics Physician · Fresno, CA
Diem Ngoc Nguyen, MD is a pediatrics physician with a practice address in Fresno, California, and NPI 1104323146, issued on Apr 6, 2018. Check the license (California A179057, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Diem Ngoc Nguyen
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- A179057 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7145 N Chestnut Ave Ste 101, Fresno, CA 93720
- Phone
- (559) 603-7270
- Enumerated
- Apr 6, 2018
- Record last updated
- Mar 5, 2026
- Fax
- (559) 603-7271
- Medicare enrollment
- Enrolled (PECOS I20220705002412); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 7145 N Chestnut Ave Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cynthia Baer, FNPNurse Practitioner1770564270
- Omar Hanafy, MDPediatrics Physician1972180073
- Arsia Moua, NP-CPediatric Nurse Practitioner1437694155
- John Moua, M.D.Pediatric Pulmonology Physician1154502573
- Albert Mu, D.O.Adult Medicine Physician1205001559
Verify Diem Ngoc Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A179057Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average pediatrics physician in 2024
11 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $742.54
13 payments; by number, the most common kind was food and beverage; the largest payer was LivaNova USA, Inc. The 21,580 providers of this specialty with any payment received $842.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Community Health PartnersFresno, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diem Ngoc Nguyen among 9,272 pediatrics physician records in California
Diem Ngoc Nguyen, MD is one of 9,272 pediatrics physician records with a practice address in California. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 86% of them.
- NPI issued2018 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileYes · 8% of these records are
- Graduated2018 · median 2012 among the 754 with a school on file
- Record last updated2026 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatrics Physician providers in California
There are 9,272 pediatrics physician records in California.
All 9,272 in California → Every provider in Fresno → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- David Bergdahl, M.D.Fresno, CA 937201386615714
- Kevin Chang, MDFresno, CA 937201760406789
- Mercedes Chapa, MDFresno, CA 937201295842326
- Carmen De La Rosa, M.D.Fresno, CA 937201700857265
- Wilfred Derksen, MDFresno, CA 937201003801267
- Linda Fraley, M.D.Fresno, CA 937201013988625
- Harry Jameson, MDFresno, CA 937201194710673
- Judi Krogstad, M.D.Fresno, CA 937201730196304
Common questions
What is Diem Ngoc Nguyen, MD's NPI number?
Diem Ngoc Nguyen, MD's National Provider Identifier (NPI) is 1104323146, issued on Apr 6, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Diem Ngoc Nguyen, MD located?
The NPPES record lists a practice address at 7145 N Chestnut Ave Ste 101, Fresno, CA, 93720. Phone: (559) 603-7270. Providers update this record themselves, so call before visiting.
How can I verify Diem Ngoc Nguyen, MD's license?
NPPES lists California license number A179057, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Diem Ngoc Nguyen, MD prescribe under Medicare Part D?
In 2024, Diem Ngoc Nguyen, MD had 11 Medicare Part D claims; the average among pediatrics physician prescribers was 375. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.